vm.h

//
// Created by Mic Pringle on 03/12/2022.
//

#ifndef CLOX_VM_H
#define CLOX_VM_H

#include "object.h"
#include "table.h"
#include "value.h"

#define FRAMES_MAX 64
#define STACK_MAX (FRAMES_MAX * UINT8_COUNT)

typedef struct {
    ObjClosure *closure;
    uint8_t *ip;
    Value *slots;
} CallFrame;

typedef struct {
    CallFrame frames[FRAMES_MAX];
    int frameCount;

    Value stack[STACK_MAX];
    Value *stackTop;
    Table globals;
    Table strings;
    ObjString *initString;
    ObjUpvalue *openUpvalues;
    size_t bytesAllocated;
    size_t nextGC;
    Obj *objects;
    int grayCount;
    int grayCapacity;
    Obj **grayStack;
} VM;

typedef enum {
    INTERPRET_OK,
    INTERPRET_COMPILE_ERROR,
    INTERPRET_RUNTIME_ERROR
} InterpretResult;

extern VM vm;

void initVM();

void freeVM();

InterpretResult interpret(const char *source);

void push(Value value);

Value pop();

#endif